Experiments on the unsteady ground vortex

John Michael Cimbala, Donald P. Gaublomme, David R. Stinebring, Michael L. Billet

Research output: Contribution to conferencePaperpeer-review

1 Scopus citations


The ground vortex formed by a jet impinging on the ground in the presence of a cross flow has been studied experimentally. High speed motion pictures and spectral measurements were obtained to study the unsteady features of this flowfield. A very low frequency "puffing" action was observed. Since this unsteadiness could not be correlated with any other oscillations in the flowfield, the low frequency oscillations must come from the gross features of the ground vortex itself. Namely, jet fluid accumulates in the ground vortex until the vortex is so large that the flowfield breaks up, the ground vortex is swept away, a new smaller vortex forms, and the process repeats itself.

Original languageEnglish (US)
StatePublished - Dec 1 1989
EventAerospace Technology Conference and Exposition - Anaheim, CA, United States
Duration: Sep 25 1989Sep 28 1989


OtherAerospace Technology Conference and Exposition
Country/TerritoryUnited States
CityAnaheim, CA

All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering


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